X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/74b220028595342028e3309002e4ec359af328f9..0d80586a67622d4d58908fee41c3be8a6813d426:/methods/connect.cc diff --git a/methods/connect.cc b/methods/connect.cc index 16fb6e793..07a730b88 100644 --- a/methods/connect.cc +++ b/methods/connect.cc @@ -15,12 +15,16 @@ #include #include +#include +#include +#include +#include #include #include #include #include - +#include #include #include @@ -35,13 +39,15 @@ #include /*}}}*/ -static string LastHost; +static std::string LastHost; static int LastPort = 0; static struct addrinfo *LastHostAddr = 0; static struct addrinfo *LastUsed = 0; +static std::vector SrvRecords; + // Set of IP/hostnames that we timed out before or couldn't resolve -static std::set bad_addr; +static std::set bad_addr; // RotateDNS - Select a new server from a DNS rotation /*{{{*/ // --------------------------------------------------------------------- @@ -58,7 +64,7 @@ void RotateDNS() // DoConnect - Attempt a connect operation /*{{{*/ // --------------------------------------------------------------------- /* This helper function attempts a connection to a single address. */ -static bool DoConnect(struct addrinfo *Addr,string Host, +static bool DoConnect(struct addrinfo *Addr,std::string Host, unsigned long TimeOut,int &Fd,pkgAcqMethod *Owner) { // Show a status indicator @@ -73,7 +79,7 @@ static bool DoConnect(struct addrinfo *Addr,string Host, Owner->Status(_("Connecting to %s (%s)"),Host.c_str(),Name); // if that addr did timeout before, we do not try it again - if(bad_addr.find(string(Name)) != bad_addr.end()) + if(bad_addr.find(std::string(Name)) != bad_addr.end()) return false; /* If this is an IP rotation store the IP we are using.. If something goes @@ -100,7 +106,7 @@ static bool DoConnect(struct addrinfo *Addr,string Host, /* This implements a timeout for connect by opening the connection nonblocking */ if (WaitFd(Fd,true,TimeOut) == false) { - bad_addr.insert(bad_addr.begin(), string(Name)); + bad_addr.insert(bad_addr.begin(), std::string(Name)); Owner->SetFailReason("Timeout"); return _error->Error(_("Could not connect to %s:%s (%s), " "connection timed out"),Host.c_str(),Service,Name); @@ -119,7 +125,7 @@ static bool DoConnect(struct addrinfo *Addr,string Host, Owner->SetFailReason("ConnectionRefused"); else if (errno == ETIMEDOUT) Owner->SetFailReason("ConnectionTimedOut"); - bad_addr.insert(bad_addr.begin(), string(Name)); + bad_addr.insert(bad_addr.begin(), std::string(Name)); return _error->Errno("connect",_("Could not connect to %s:%s (%s)."),Host.c_str(), Service,Name); } @@ -127,21 +133,17 @@ static bool DoConnect(struct addrinfo *Addr,string Host, return true; } /*}}}*/ -// Connect - Connect to a server /*{{{*/ -// --------------------------------------------------------------------- -/* Performs a connection to the server */ -bool Connect(string Host,int Port,const char *Service,int DefPort,int &Fd, - unsigned long TimeOut,pkgAcqMethod *Owner) +// Connect to a given Hostname /*{{{*/ +static bool ConnectToHostname(std::string const &Host, int const Port, + const char * const Service, int DefPort, int &Fd, + unsigned long const TimeOut, pkgAcqMethod * const Owner) { - if (_error->PendingError() == true) - return false; - // Convert the port name/number char ServStr[300]; if (Port != 0) - snprintf(ServStr,sizeof(ServStr),"%u",Port); + snprintf(ServStr,sizeof(ServStr),"%i", Port); else - snprintf(ServStr,sizeof(ServStr),"%s",Service); + snprintf(ServStr,sizeof(ServStr),"%s", Service); /* We used a cached address record.. Yes this is against the spec but the way we have setup our rotating dns suggests that this is more @@ -162,9 +164,23 @@ bool Connect(string Host,int Port,const char *Service,int DefPort,int &Fd, struct addrinfo Hints; memset(&Hints,0,sizeof(Hints)); Hints.ai_socktype = SOCK_STREAM; - Hints.ai_flags = AI_ADDRCONFIG; + Hints.ai_flags = 0; + if (_config->FindB("Acquire::Connect::IDN", true) == true) + Hints.ai_flags |= AI_IDN; + // see getaddrinfo(3): only return address if system has such a address configured + // useful if system is ipv4 only, to not get ipv6, but that fails if the system has + // no address configured: e.g. offline and trying to connect to localhost. + if (_config->FindB("Acquire::Connect::AddrConfig", true) == true) + Hints.ai_flags |= AI_ADDRCONFIG; Hints.ai_protocol = 0; + if(_config->FindB("Acquire::ForceIPv4", false) == true) + Hints.ai_family = AF_INET; + else if(_config->FindB("Acquire::ForceIPv6", false) == true) + Hints.ai_family = AF_INET6; + else + Hints.ai_family = AF_UNSPEC; + // if we couldn't resolve the host before, we don't try now if(bad_addr.find(Host) != bad_addr.end()) return _error->Error(_("Could not resolve '%s'"),Host.c_str()); @@ -180,7 +196,7 @@ bool Connect(string Host,int Port,const char *Service,int DefPort,int &Fd, { if (DefPort != 0) { - snprintf(ServStr,sizeof(ServStr),"%u",DefPort); + snprintf(ServStr, sizeof(ServStr), "%i", DefPort); DefPort = 0; continue; } @@ -195,6 +211,9 @@ bool Connect(string Host,int Port,const char *Service,int DefPort,int &Fd, return _error->Error(_("Temporary failure resolving '%s'"), Host.c_str()); } + if (Res == EAI_SYSTEM) + return _error->Errno("getaddrinfo", _("System error resolving '%s:%s'"), + Host.c_str(),ServStr); return _error->Error(_("Something wicked happened resolving '%s:%s' (%i - %s)"), Host.c_str(),ServStr,Res,gai_strerror(Res)); } @@ -245,3 +264,35 @@ bool Connect(string Host,int Port,const char *Service,int DefPort,int &Fd, return _error->Error(_("Unable to connect to %s:%s:"),Host.c_str(),ServStr); } /*}}}*/ +// Connect - Connect to a server /*{{{*/ +// --------------------------------------------------------------------- +/* Performs a connection to the server (including SRV record lookup) */ +bool Connect(std::string Host,int Port,const char *Service, + int DefPort,int &Fd, + unsigned long TimeOut,pkgAcqMethod *Owner) +{ + if (_error->PendingError() == true) + return false; + + if(LastHost != Host || LastPort != Port) + { + SrvRecords.clear(); + if (_config->FindB("Acquire::EnableSrvRecords", true) == true) + GetSrvRecords(Host, DefPort, SrvRecords); + } + // we have no SrvRecords for this host, connect right away + if(SrvRecords.size() == 0) + return ConnectToHostname(Host, Port, Service, DefPort, Fd, + TimeOut, Owner); + + // try to connect in the priority order of the srv records + while(SrvRecords.size() > 0) + { + // PopFromSrvRecs will also remove the server + Host = PopFromSrvRecs(SrvRecords).target; + if(ConnectToHostname(Host, Port, Service, DefPort, Fd, TimeOut, Owner)) + return true; + } + + return false; +}